Chimney cap and ventilator



(No Model.) I

W. J. & 0. KAYSER. CHIMNEY GAP AND VENTILATOR.

, Patented July 7, 1885.

mfv'esses:

ilnrrnn Erm ne Barnwr @rrrca.

\VILLIAM J. KAYSER AND CHARLES KAYSER, OF MILWAUKEE, WISCONSIN.

CHIMNEY CAP AND VENTILATOR.

EDPECIPICATIQN forming part of Letters Patent No. 321,729, dated July '7, 1885.

Application filed April 1, 1885.

To all whom it may concern.-

Be it known that we, WILLIAM J. KAYSER and CHARLES KAYSER, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Chimney Caps and Ventilators; and we do hereby declare that the, following is a full, clear, and exact description thereof.

Our invention relates to chimney caps and ventilators; and it consists in certain peculiarities of construction, as will be more fully set forth hereinafter.

In the drawings, Figure l is an elevation of our improved device, and Fig. 2 is a vertical central section thereof. Fig. 3 is a detail.

Our present invention is an improvement on the device for which we filed an application on the 27th dayof May, A. D. 1884, Serial No. 132,898,.which application was allowed on the 13th day of December, A. D. 1884; and the said improvement consists, chiefly, in a different relative arrangement of the truncated open cones and deflectors of the said device, as well as in the addition thereto of shields or partitions to break the force of the wind and form air-chambers within the cap, all as hereinafter more specifically set forth.

A is the chimney-pipe, which is fastened in any suitable manner on top of a chimney, as in the former application above named.

B is a truncated open cone set in an inverted position around the pipe A, and attached thereon so that its upper edge is substantially parallel with the top edge of the said pipe, (instead of rising half its height above it, as in the former case,) the attachment being made by means of the braces G G, and the diameter of the lower opening of the cone being greater than the diameter of the pipe. An annular space, a, is left between the lower rim of the cone B and the periphery of the pipe A, which serves as a dischargeopening for rain, snow, or any other substance that may get inside the cap.

B is another truncated cone set in upright position, and this cone is of much greaterdiameter than the cone B, and is so disposed that its lower rim comes down just below the upper rim of the cone B, (instead of being of the same diameter at the opposing points and set one considerably above the other, as in our (No model.)

former device,) and the cone B is supported in position by the upper ends of the described braces G O, as shown. By means of this arrangement of the two cones B B another annular space, I), is formed all around between their adjacent rims, and the air, striking the lower cone, passes up into the cap through the space 12, causing a suction at this point.

D is the pipe cap or top of our device, and E the inside shield, which latter is likewise an open truncated cone, which is of the same pitch as the outside cone, B, but of much less diameter, and which is so disposed that about half its height rises above the open top of cone B, passing therethrough, and terminating about midway between the top rim of the cone B and the bottom rim of the pipecap D, and the braces F, which connect these three parts together in the relative positions named, are constructed as shown in perspective in the detail view Fig. 3that is, of the shape shown, and with the flanges ff f projecting (at right angles) from the main plate of the said braces. The vertical wall of the plate is cut out, as at f", and a part of this cut-out part is turned at a right angle, and this forms the flange f, which follows the pitch of the cone B, and is secured thereto, while the flange f is of the same pitch, and is turned from the lower diagonal edge of the plate F, and secured to the outside of the internal cone or shield, E, and the top flange, f, is turned from the upper edge of this plate F at a pitch corresponding to that of the cap D, and is secured to the under side thereof, the preferred fastening device in each instance being bolts or rivets, as shown. The inside shield, E, serves to prevent currents of air from rushing in under the cap D and down the pipe A, and, taken in connection with the braces F, (which, as stated, constitute shields or partitions themselves, and form airchambers of the spaces between them beneath the cap D,) serve to direct the said air-currents either straight through the spaces between the parts F or down between the annular space a, between the cones B and E, and out of the space 1), between the adjacent rims of the cones B and B, causing a suction in such downward passage that greatly facilitates the passage outward of smoke from the pipe A by the augmented draft. The air-chambers between the braces or shields F are much wider down at their lower parts than above at the top of the cone E, and thereby the body of air as it rushes into each chamber from the outside is compressed in passing over the top of the cone E, creating a forced suction, while above this point, owing to the angle f, at which the inner sides of the plate F are cut away, the space is widened again directly under the cap D, thereby giving the air (and the smoke and products of combustion carried thereby) all possible chance to spread out in any direction and escape.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. In a chimney cap and ventilator, the combination, with the chimney-pipe, of an inverted truncated cone secured thereto, rising to the same height with the said pipe, and an upright truncated cone of greater diameter than the inverted cone, and secured by the same braces to the chimney-pipe, the lower rim of the upright cone coming just below the line of the top rim of the inverted cone, leaving an annular space between the adj acent rims, substantially as and for the purpose set forth.

2. In a chimney cap and ventilator, the combination, with the ehimney-pipe and inverted truncated cone secured thereto, the upper edges of both parts rising to the same height, the upright truncated cone, of greater diameter, secured to the braces that support the inverted cone and with its lower rim extending just below the top rim of the inverted cone at some distance all around it, and another truncated cone secured to the large upright cone and passing up therethrough, with half its height above the top rim of said cone, substantially as and for the purpose set forth.

3. In a chimney cap and ventilator, the combination of the chimney-pipe A, inverted cone 13, larger upright cone B, and cone E, forming an interior shield, all relatively arranged, substantially as described, with the pipe-cap D, supported above the cone shield E by the braces or partitions F F, forming air-chambers between them beneath the said cap, substantially as and for the purpose set forth.

In testimony that we claim the foregoing we have hereunto set our hands, at Milwaukee, in the county of Milwaukee and State of Wiscousin, in the presence of two witnesses.

WILLIAM J. KAYSER. CHARLES KAYSER.

VVituesses:

H. G. Unnnnwoon, H. J. FORSYTH. 

